The utilization of micro- and ultrafiltration with polymeric membranes for treatment of industrial cutting oil emulsion was investigated. The performance of 14 different membranes with pore sizes in the range of 1-800 nm, representing 8 different materials and varying hydrophobicity, was determined experimentally. Membrane permeances between 1.6 and 939 L m 2h-1bar-1 have been observed for the different samples as well as oil rejections between 3.42% and 99.99%. Membrane pore size and contact angle showed little influence on both values, while an interesting correlation is displayed to the individual membranes¿ capillary pressures. A possible explanation for thisphenomenon is suggested based on the formation of oil films on the membrane surface. From the investigated membranes, the best-suited one for cutting oil treatment was selected and subjected to further experiments. The effect of process temperatures between 22 and 43 °C and of feed oil concentrations between 0 and 20 vol % on the removal performance was determined. The results correspond to the explanation suggested previously.
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机译：研究了利用聚合物膜进行微滤和超滤处理工业切削油乳液的应用。通过实验确定了代表8种不同材料和不同疏水性的孔径在1-800 nm范围内的14种不同膜的性能。对于不同的样品，膜渗透率在1.6到939 L m 2h-1bar-1之间，吸油率在3.42％和99.99％之间。膜的孔径和接触角对这两个值几乎没有影响，而与各个膜的毛细压力之间存在有趣的关系。根据膜表面油膜的形成，提出了对此现象的可能解释。从研究的膜中，选择最适合切削油处理的膜，并进行进一步的实验。确定了工艺温度在22至43°C之间以及进料油浓度在0至20 vol％之间对去除性能的影响。结果与先前建议的解释相对应。
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